Westermo PMI-110-F2G, User Manual, Page: 23 / 240

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Fast Ethernet Ports
The Fast Ethenert ports (1~8) comply with IEEE 802.3af / IEEE802.3at function with
120watts system power budget control function ( enabled from firmware v1.2a); the PoE
ports support alternative-A type powering method, and forward power through the RJ-
45 conductors 1, 2, 3 and 6. If the power device (PD) is not fully compliant with IEEE
802.3af / IEEE 802.3at, then it will not be powering. So, before connecting the PD device,
please ensure the PD you have bought is compliant with PoE standard. The RJ-45 plug’s
conductor pin assignment shows as following table for your reference.
RJ-45 conductor Type of Signal Polarity of power Note
1 RxD + V - Alternative-A
2 RxD - V - Alternative-A
3 TxD + V+ Alternative-A
6 TxD - V+ Alternative-A
Note: The PD device should accept power from either 1,2,3,6 (data pairs) or 4,5,7,8
(spare pairs); for the detail information, please refer to IEEE 802.3at / IEEE 802.3af Power
over Ethernet standard.
Gigabit Ethernet /SFP combo port
The PMI-110-F2G provides 2 Gigabit RJ-45/ SFP combo ports that with different link
speed – 10Mbps, 100Mbps, 1000Mbps, and compliant with the standards of IEEE 802.3
10Base-T, IEEE 82.3u 100Base-TX, IEEE 8023.u 100Base-FX, IEEE 802.3ab 1000Base-T, and
IEEE 802.3z Gigabit fiber.
The combo ports support SFP transceiver plug-in high priority function; thus, don’t